Christopher Andrew Koster (born August 31, 1964) is an American lawyer and politician who served as the 41st
Attorney General of Missouri
The Office of the Missouri Attorney General was created in 1806 when Missouri was part of the Louisiana Territory. Missouri's first Constitution in 1820 provided for an appointed attorney general, but since the 1865 Constitution, the Attorney Gene ...
from 2009 to 2017. Prior to serving as attorney general, Koster was elected three times as prosecuting attorney of Cass County, Missouri. Additionally, he served four years as State Senator from Missouri's 31st Senatorial district.
In 2016, Koster was the Democratic nominee for
Governor of Missouri
A governor is an administrative leader and head of a polity or political region, ranking under the head of state and in some cases, such as governors-general, as the head of state's official representative. Depending on the type of political r ...
and was defeated by Republican nominee
Eric Greitens
Eric Robert Greitens (; born April 10, 1974) is a former American politician who was the 56th governor of Missouri from January 2017 until his resignation in June 2018 amid allegations of sexual assault and campaign finance impropriety.
Born a ...
in the general election. After completing his terms as Attorney General, Koster joined
Centene Corporation, where he currently serves as Executive Vice President, Secretary and General Counsel.
Personal life
Early life and education
Koster was born in
St. Louis, Missouri.
Koster earned a liberal arts bachelor's degree from the
University of Missouri - Columbia in 1987 and his Juris Doctor from the University of Missouri - Columbia School of Law in 1991.
Koster also earned a master's degree in Business Administration from
Washington University in St. Louis in 2002.
Early career
From 1991 to 1993, Koster served as an Assistant Attorney General for the Office of the Missouri Attorney General. From 1993 to 1994, he practiced law with the firm of Blackwell Sanders in
Kansas City, Missouri.
Political career
Cass County (MO) Prosecuting Attorney
In 1994, Koster was elected Prosecuting Attorney for
Cass County, Missouri
Cass County is a county located in the western part of the U.S. state of Missouri and is part of the Kansas City metropolitan area. As of the 2020 census, the population was 107,824. Its county seat is Harrisonville, however the county contains ...
as a Republican
and was successfully re-elected in 1998 and 2002 by wide margins.
Koster supervised the Missouri investigation and prosecution of serial killer
John Edward Robinson. On June 4, 2000, Koster led a group of law enforcement officers in the discovery of the remains of three female victims of Robinson's, each stored in 55-gallon drums inside a Raymore, Missouri storage facility. In conjunction with prosecutors in Kansas, John Robinson was convicted of the murders of eight women in two states, although more victims are believed to have been killed by Robinson. Robinson lured his victims over the internet, and has been called the internet's first serial killer.
Missouri Senate
Koster was elected to the
Missouri Senate
The Missouri Senate is the upper chamber of the Missouri General Assembly. It has 34 members, representing districts with an average population of 174,000. Its members serve four-year terms, with half the seats being up for election every two yea ...
in 2004 as a Republican.
He represented Missouri's 31st Senatorial District, which consists of
Cass
Cass may refer to:
People and fictional characters
* Cass (surname), a list of people
* Cass (given name), a list of people and fictional characters
* Big Cass, ring name of wrestler William Morrissey
* Cass, in British band Skunk Anansie
* Ca ...
,
Johnson
Johnson is a surname of Anglo-Norman origin meaning "Son of John". It is the second most common in the United States and 154th most common in the world. As a common family name in Scotland, Johnson is occasionally a variation of ''Johnston'', a ...
,
Bates
Bates may refer to:
Places
* Bates, Arkansas, an unincorporated community
* Bates, Illinois. an unincorporated community in Sangamon County
* Bates, Michigan, a community in Grand Traverse County
* Bates, New York, a hamlet in the town of Ellingt ...
and
Vernon counties.
During his time in the Missouri Senate, Koster played key roles in the debates over
stem cell research
In multicellular organisms, stem cells are undifferentiated or partially differentiated cells that can differentiate into various types of cells and proliferate indefinitely to produce more of the same stem cell. They are the earliest type o ...
, tort reform, and the elimination of
Medicaid
Medicaid in the United States is a federal and state program that helps with healthcare
Health care or healthcare is the improvement of health via the prevention, diagnosis, treatment, amelioration or cure of disease, illness, injury, and ...
fraud.
In 2006, he carried legislation in the Senate that overhauled Missouri's
eminent domain
Eminent domain (United States, Philippines), land acquisition (India, Malaysia, Singapore), compulsory purchase/acquisition (Australia, New Zealand, Ireland, United Kingdom), resumption (Hong Kong, Uganda), resumption/compulsory acquisition (Austr ...
laws.
On August 1, 2007, Koster made Missouri political history when he announced that he was leaving the Missouri Republican Party to join the Democratic party. Citing his frustration with the Republican Party's increasing intolerance on issues like stem cell research, workers' rights, cultural inclusion, and the non-partisan court plan, Koster said that the Missouri Republican Party had become too beholden to the extreme right-wing of the party. He said, "Today, Republican moderates are all but extinct."
Before his change of parties, Koster was chairman of the Republican Caucus, the majority party's fourth-ranking position in the Missouri State Senate.
While in the Senate, he served on the following Senate committees:
*Economic Development, Tourism, and Local Government
*Judiciary and Civil and Criminal Jurisprudence
*Pensions, Veterans' Affairs and General Laws
*Commerce, Energy and the Environment
*Agriculture, Conservation, Parks and Natural Resources
Attorney General
2008 election

In 2008, Koster defeated State Representative Margaret Donnelly and Jeff Harris in the Democratic primary for the nomination for Missouri Attorney General. Despite joining the Missouri Democratic party only a year earlier, and primary rivals calling him an opportunist for switching parties, Koster received several Democratic-leaning endorsements from law enforcement, labor unions, Democratic interest groups and elected officials.
Koster won the nomination despite accusations from Donnelly and Harris that his campaign violated state law in raising money from multiple committees.
During the campaign, Koster's ex-wife Rebecca Bowman Nassikas donated $200,000 to Missourians for Honest Leadership, a political committee, which paid $187,500 to purchase air time and produce television ads in an effort to oppose Koster's candidacy for Missouri Attorney General. He went on to defeat Republican State Senator
Mike Gibbons in the general election, 52.83% to 47.17%. He was sworn in as attorney general on January 12, 2009, succeeding
Jay Nixon
Jeremiah Wilson "Jay" Nixon (born February 13, 1956) is an American lawyer and politician who served as the 55th Governor of Missouri from 2009 to 2017. A member of the Democratic Party, he was first elected to the governorship in 2008 and reele ...
.
First term, 2009–2013
In 2011, Koster filed an
amicus brief
An ''amicus curiae'' (; ) is an individual or organization who is not a party to a legal case, but who is permitted to assist a court by offering information, expertise, or insight that has a bearing on the issues in the case. The decision on ...
opposing the individual mandate in the Affordable Care Act under the Commerce Clause. He filed a second amicus brief suggesting that the individual mandate could be upheld under Congress' ability to lay and collect taxes, which is how the Supreme Court ruled on the matter in 2012.
In 2012, Koster's staff moved to the Broadway Building in Jefferson City. After this move, a request was made for "repairs, replacements and improvements" on two floors. However, Koster's office was in the Supreme Court Building. Funding for the $3.2 million request came from money recovered from consumer fraud cases. Also in 2012, a report by state auditor
Tom Schweich
Thomas A. Schweich (October 2, 1960 – February 26, 2015) was an American politician, diplomat, attorney, and author. A member of the Republican Party, Schweich served as State Auditor of Missouri from 2011 until his death in 2015.
Prior to bein ...
criticized Koster for his practice of awarding contingency fee contracts to law firms that had donated to his campaign.
[Koster lawsuit against California ban on caged hens' eggs](_blank)
stltoday.com; accessed April 3, 2015.
Second term, 2013–2017
Koster is an advocate of the
death penalty. In July 2013, there were 21 inmates on death row in Missouri whose executions he was pressing the
Supreme Court of Missouri
The Supreme Court of Missouri is the highest court in the state of Missouri. It was established in 1820 and is located at 207 West High Street in Jefferson City, Missouri. Missouri voters have approved changes in the state's constitution to gi ...
to set a date for before the drugs used for lethal injections expired. After the 21 inmates filed suit against the
Missouri Department of Corrections
The Missouri Department of Corrections is the state law enforcement agency that operates state prisons in the U.S. state of Missouri. It has its headquarters in Missouri's capital of Jefferson City.
The Missouri Department of Corrections has 2 ...
over the use of the drug
propofol
Propofol, marketed as Diprivan, among other names, is a short-acting medication that results in a decreased level of consciousness and a lack of memory for events. Its uses include the starting and maintenance of general anesthesia, sedation ...
for
lethal injection
Lethal injection is the practice of injecting one or more drugs into a person (typically a barbiturate, paralytic, and potassium solution) for the express purpose of causing rapid death. The main application for this procedure is capital puni ...
s, concerning
cruel and unusual punishment
Cruel and unusual punishment is a phrase in common law describing punishment that is considered unacceptable due to the suffering, pain, or humiliation it inflicts on the person subjected to the sanction. The precise definition varies by jurisd ...
, the state Supreme Court temporarily halted the further use of the death penalty until the case was decided. Missouri law allows for the use of lethal gas where lethal injection is not available. While the propofol case was before the Missouri Supreme Court, Koster argued for the use of
gas chambers
A gas chamber is an apparatus for killing humans or other animals with gas, consisting of a sealed chamber into which a poisonous or asphyxiant gas is introduced. Poisonous agents used include hydrogen cyanide and carbon monoxide.
History ...
to execute Missouri prisoners.
During his second term, Koster's office defended U.S. District Judge
Catherine D. Perry
Catherine D. Perry (born 1952) is a senior United States district judge of the United States District Court for the Eastern District of Missouri.
Education and career
Born in Hobart, Oklahoma, Perry received a Bachelor of Arts degree from Uni ...
after she denied a motion for temporary restraining orders on six police officers enforcing a "5-second rule" that required demonstrators to move every five seconds or face arrest in
Ferguson, Missouri
Ferguson is a city in St. Louis County, Missouri, United States. It is part of the Greater St. Louis metropolitan area. Per the 2020 census, the population was 18,527.
History
What is now the city of Ferguson was founded in 1855, when William ...
, citing the need for law enforcement's protection of property and the availability of a designated protest area. However, at the time of this ruling, the designated protest area was off-limits to the public. This "5-second rule" was later determined to be unconstitutional by a different federal judge.
In February 2014, Koster filed a suit on behalf of six states challenging California's prohibition on the sale of eggs laid by caged hens kept in conditions more restrictive than those approved by California voters in a 2008 ballot initiative,
Proposition 2. In October 2014, Judge Kimberly Mueller dismissed the suit, ruling that the states lacked legal standing to sue on behalf of their residents and that Koster and other plaintiffs were representing only the interests of egg farmers, rather than "a substantial statement of their populations".
Also in October 2014, House Speaker
Tim Jones announced plans to investigate charges that Koster took actions in office that were designed to benefit campaign contributors. Some of the actions investigated included: the Simmons Firm donating $100,000 to Koster's campaign in 2012 and both parties suing Republic Services in 2013; Koster ending an inquiry focusing on
5-hour Energy after conversations with a lobbyist for the company who was also a Koster contributor; Koster had negotiating an agreement with
Pfizer
Pfizer Inc. ( ) is an American multinational pharmaceutical and biotechnology corporation headquartered on 42nd Street in Manhattan, New York City. The company was established in 1849 in New York by two German entrepreneurs, Charles Pfize ...
, another campaign contributor, to pay Missouri $750,000 in connection with a multi-state investigation of illegal marketing practices, about $350,000 less than what the state would have collected had it participated in a joint negotiation with other states.
["Lobbyists bearing gifts pursue state attorneys general](_blank)
nytimes.com; accessed April 3, 2015.
nytimes.com, October 30, 2014; accessed April 3, 2015.
kansascity.com; accessed April 3, 2015.
In Missouri, it is legal for elected officials to accept unlimited campaign contributions and gifts from lobbyists. Despite his position on lobbying reform, Koster rejects the idea of placing limits on the amount of money a corporation or a wealthy individual could contribute to a campaign. He instead suggests adding more transparency to the existing system. In December 2014, Koster said that he would no longer accept gifts from lobbyists.
During his second term as attorney general, Koster stated that he supports
same-sex marriage
Same-sex marriage, also known as gay marriage, is the marriage of two people of the same sex or gender. marriage between same-sex couples is legally performed and recognized in 33 countries, with the most recent being Mexico, constituting ...
, but defended his state's former constitutional ban on it because voters approved it.
2016 gubernatorial election
In February 2016, Koster filed to run for governor of Missouri. He won the August 2 Democratic primary, but lost the general election to Republican
Eric Greitens
Eric Robert Greitens (; born April 10, 1974) is a former American politician who was the 56th governor of Missouri from January 2017 until his resignation in June 2018 amid allegations of sexual assault and campaign finance impropriety.
Born a ...
.
2017–present
In February 2017, Koster was named Senior Vice President of Corporate Services at Centene Corp.
In February 2020, Koster took the position of EVP, Secretary and General Counsel at Centene.
Electoral history
2016 Gubernatorial race
As Attorney General
As state senator
References
Sources
*''Official Manual, State of Missouri, 2005-2006.'' Jefferson City, MO: Secretary of State.
External links
Gubernatorial campaign websiteMissouri Office of the Attorney General official website''official government website''
Sponsored BillsCo-Sponsored Bills
Project Vote Smart - Senator Chris Koster (MO)
profile
*''Follow the Money'' - Chris Koster
2008
campaign contributions for Attorney General
20062004
campaign contributions for State Senate
, -
{{DEFAULTSORT:Koster, Chris
1964 births
21st-century American politicians
Lawyers from St. Louis
Living people
Missouri Attorneys General
Missouri Democrats
Missouri Republicans
Missouri lawyers
Missouri state senators
People from Cass County, Missouri
Politicians from St. Louis
University of Missouri alumni
Olin Business School (Washington University) alumni
Candidates in the 2016 United States elections